[Bug 82864] [HSW i915 MSI-7817] S4 resume on Haswell causes memory corruption (OOM, ext4_, ...)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82864

--- Comment #10 from Imre Deak <imre.deak at intel.com> ---
(In reply to Jens from comment #8)
> Created attachment 108530 [details]
> dmesg output of "preload: Corrupted page table at address 1dd4146"
> 
> Unforunately I have just experienced another error upon resume. This
> prevented the machine from shutting down cleanly (although it was still
> working when I resumed). This is the first time this happened, though.
> 
> [32938.478751] video LNXVIDEO:00: Restoring backlight state
> [32993.327894] preload: Corrupted page table at address 1dd4146
> [32993.327919] PGD 36141067 PUD c66a8067 PMD 4341434143414341 BAD
> [32993.327936] Bad pagetable: 000b [#1] SMP
> ... (see attachment)

Ok, this doesn't look good. Could you try if you can reproduce it with the same
kernel booting with nomodeset?

(In reply to Jens from comment #9)
> With 3.17rc5+ (the above commit) I can not reproduce the same error as
> above, but after a couple attempts the system simply refuses to suspend -
> the 'pm-hibernate' process freezes. Also it is not possible to shut down
> cleanly any more.
> 
> There is nothing in the logs or in dmesg to hint at what might be happning
> (that I could recognize).
> 
> I will try again tomorrow to see if I can reproduce this.

Actually now trying this commit is less important, since even -nightly has the
problem, so let's try to narrow down things in -nightly.

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